Subtract 28/27 from 15/63
1st number: 15/63, 2nd number: 1 1/27
15/63 - 28/27 is -151/189.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 27 is 189
Next, find the equivalent fraction of both fractional numbers with denominator 189 - For the 1st fraction, since 63 × 3 = 189,
15/63 = 15 × 3/63 × 3 = 45/189 - Likewise, for the 2nd fraction, since 27 × 7 = 189,
28/27 = 28 × 7/27 × 7 = 196/189 - Subtract the two like fractions:
45/189 - 196/189 = 45 - 196/189 = -151/189
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/63-28/27 15/63-56/27 15/63-28/54 45/63-28/27 15/63-84/27 15/63-28/81 75/63-28/27